The reason I am asking if you put a disk in is, then the optical drive will try to access the disc and tell you the read/write speeds available for that type of disc. This way you will know if the laser is reading the discs. Try writeable dvd's and cd's for confirmation.
After you put the disc in, go ahead and reopen System Profiler to see what it says now under Hardware > Disc Burning.
OK I finally figured out what you are saying. First I went to the Disc burning and saw the following:
MAT****A DVD-R UJ-875:
Firmware Revision: DB09
Interconnect: ATAPI
Burn Support: Yes (Apple Shipping Drive)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media: To show the available burn speeds, insert a disc and choose View > Refresh
I then put in a writable CD (which I know it recognizes), pressed view > refresh and got the following:
MAT****A DVD-R UJ-875:
Firmware Revision: DB09
Interconnect: ATAPI
Burn Support: Yes (Apple Shipping Drive)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media:
Type: CD-R
Blank: Yes
Erasable: No
Overwritable: Yes
Appendable: Yes
Write Speeds: 8x, 24x
I repeated that for a DVD-R, pressed view > refresh but the disk ejected and the screen returned to this:
MAT****A DVD-R UJ-875:
Firmware Revision: DB09
Interconnect: ATAPI
Burn Support: Yes (Apple Shipping Drive)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media: To show the available burn speeds, insert a disc and choose View > Refresh
Don't know if any of this makes sense. To refresh - the drive recognizes writable CD-R discs and written DVD-R discs but ejects blank DVD-R discs. I have exactly the same experience on my other iMac.
Really appreciate your help
poppi